56-04-01: Control Stick Socket Castings
FAA order 56-04-01 is an airworthiness directive. The FAA's subject line: Control Stick Socket Castings. It names American Champion Aircraft 7 Citabria and Champ: about 429 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: other and general.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- American Champion Aircraft Corp.
- Models
- 7EC
- On this site
- American Champion Aircraft 7 Citabria and Champ 429 registered
Dates and paperwork
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (541 characters)
56-04-01 CHAMPION: Applies to Model 7EC Aircraft, Serial Numbers 300 to 370 Inclusive.
To be accomplished as soon as practicable but not later than April 1, 1956.
Inspect front and rear control stick socket castings, P/N 2-705, for cracks at the ears to which the push-pull tube attaches. If found cracked, the castings should be replaced. If a standard AN bolt, nut and washer are installed, replace with a clevis bolt, AN 24-16, (11/16 grip), and an AN 320-4 shear nut so that excessive loads cannot be placed on the socket ears.
Related safety bulletins advice on the same designs, not orders
2018-07-12CE-18-20 · Electrical Power
2013-07-12CE-13-40 · Flight Compartment
2011-07-06CE-11-43 · Flight Controls
2010-07-23CE-10-39 · Equipment - Furnishings
2009-03-20CE-09-20 · Equipment - Furnishings
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/56-04-01.json · aircraft systems.